Air purification and sterilization unit



FIG. 1 illustrates a perspective view of an air purification andsterilization unit showing the new design;

FIG. 2 illustrates a front elevation view thereof;

FIG. 3 illustrates a rear elevation view thereof;

FIG. 4 illustrates a top plan view thereof;

FIG. 5 illustrates a bottom plan view thereof;

FIG. 6 illustrates a right side elevation view thereof;

FIG. 7 illustrates a left side elevation view thereof;

FIG. 8 illustrates a perspective view of another embodiment of an airpurification and sterilization unit showing the new design;

FIG. 9 illustrates a front elevation view thereof;

FIG. 10 illustrates a rear elevation view thereof;

FIG. 11 illustrates a top plan view thereof;

FIG. 12 illustrates a bottom plan view thereof;

FIG. 13 illustrates a right side elevation view thereof; and,

FIG. 14 illustrates a left side elevation view thereof.

The broken lines and unshaded areas depict portions of the airpurification and sterilization device that form no part of the claimeddesign.

CLAIM The ornamental design for an air purification and sterilizationunit, as shown and described.